catdogcat-
To put the 4,000 BTU output in perspective-
A standard propane or gas stove top burner puts out 6000 BTUs-
which is equivalent to a standard small room electric heater of about 1800 watts running on the "High" setting.*
My Force 10 Cozy Cabin propane heater keeps up with my 22 set on about
2,000 BTUs in 35-50 degree weather
4,000 BTUs in 25-35 degree weather
and the 6,000 BTU setting should be good down to about 15 degrees, as a guess (this is California speaking)
Red Fox uses the same heater anchored overnight next to the glaciers in PWS and elsewhere in Alaska.
The only other thing to think about is that the Wallas 1300 has a fixed output of 4,000 BTUs and cannoat be dialed up or down, or turned on and off in short cycles by a thermostat. You turn it on and ventilate extra heat to suit. Also keep in mind Steve's Dora Jean is also a CD-25, not a 22.
On the now archived C-Dog site, Dale installed a Toyatomi forced air furnace like the W-1300, and found it was a bit too much for a CD-22 Angler (smaller cabin yet!) in the California Delta. OTOH, better to be able to open the window and cool down with too much heat, rather than have too little!
***********************************************************
* The BTU output is for a 1 minute period, so
6,000 BTUs in 60 seconds is 100 BTUs per second, and
1 BTU = 17.57 watts, so
100 BTUs = 1757 watts!
(some unit conversion omitted)
***********************************************************
Joe.
[/code]